Taste Sensations and Organ of Taste Quiz

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What is the main function of accessory structures in the sensory system?

Initiate Action Potentials

Analyze and perceive sensory information

Convert physical stimuli into bioelectrical energy (correct)

Act as the receptor surface

Where are receptors typically found in the sensory system?

In the peripheral sensory systems Type 2

In discrete areas known as the receptor surface (correct)

In the central nervous system (CNS)

Randomly distributed in the body

Which type of sensory system involves specialized endings of sensory nerve fibers?

Type 2 Peripheral Sensory System

Type 1 Peripheral Sensory System (correct)

Olfactory System

Gustatory System

What type of information does the Vestibular system primarily deal with?

Balance information Signup and view all the answers

Which taste sensation is described as a warning signal for tasting harmful substances?

Bitter Signup and view all the answers

What is the primary role of proprioceptive receptors in the sensory system?

Provide information about balance and body position Signup and view all the answers

What is the relationship between taste and smell?

We need both to detect flavor as they are intertwined Signup and view all the answers

What part of the mouth are taste sensations widely distributed across?

The roof and back of the mouth Signup and view all the answers

Which type of papillae is the most numerous and smallest?

Filiform Signup and view all the answers

What is the conventional textbook understanding of taste sensitivity distribution?

Images of taste sensitivity distribution in textbooks are likely incorrect Signup and view all the answers

Why is it important to have both taste and smell to detect flavor?

Both senses provide complementary information to create the perception of flavor Signup and view all the answers

What is the purpose of the olfactory receptor cells in the olfactory mucosa?

Detecting and transducing odorant molecules into electrical signals Signup and view all the answers

How do taste cells depolarize in response to receptor activation?

Via receptor potentials Signup and view all the answers

Why can odorant receptor proteins bind a range of similar chemicals?

Because they are not specific for a single odorant molecule Signup and view all the answers

Which best describes the distribution of sensitivity to taste sensations across the tongue?

Overlap with each sensation concentrated in specific areas Signup and view all the answers

What role do basal cells play in the olfactory mucosa?

Supporting olfactory receptor cells Signup and view all the answers

How does binding of an odorant molecule to an odorant receptor protein lead to depolarization of the receptor cell?

By activating G-protein processes Signup and view all the answers

What factor can contribute to an increase in sensitivity to odors during menstruation and pregnancy?

Hormones Signup and view all the answers

How do dogs' receptor cells compare to humans when it comes to the sense of smell?

Dogs have 200 times more receptor cells than humans Signup and view all the answers

In what scenario does the adaptation threshold for taste and smell increase?

When swirling a solution of higher concentration in the mouth for adaptation Signup and view all the answers

Which group demonstrates a stronger ability to discriminate between different odors?

Aboriginal tribes in Brazil Signup and view all the answers

How does blocking the nose affect the ability to taste substances?

Blocking the nose reduces taste perception Signup and view all the answers

What is the main function of fungiform papillae in taste sensation?

To be larger and broader than filiform papillae Signup and view all the answers

How often are taste cells replaced in taste buds?

Every 10 days Signup and view all the answers

Which ion is responsible for causing depolarization of taste cells in response to tastants?

Sodium (Na+) Signup and view all the answers

What is the primary mechanism for transducing sour taste in taste cells?

Interaction of H+ with ion channels Signup and view all the answers

Which type of taste cells likely respond to sweet, bitter, and umami tastes by activating GPCRs?

Type II taste cells Signup and view all the answers

What triggers the release of ATP from taste cells responding to sweet, bitter, and umami tastes?

Opening of voltage-gated Ca2+ channels Signup and view all the answers